feat: local GPU HairFastGAN hair transfer (auto-selects local, else HF Space)

fix: GFPGAN face restoration removes swap blur; simplify pipeline; GPU 4K

feat: prepare for HuggingFace Spaces deployment

fix: update HF Space URL to aditya-rAj19/FaceSWAP

feat: CI/CD pipeline + Docker + HuggingFace Spaces deployment